High severity8.1NVD Advisory· Published Jul 8, 2025· Updated Apr 15, 2026
CVE-2025-42959
CVE-2025-42959
Description
An unauthenticated attacker may exploit a scenario where a Hashed Message Authentication Code (HMAC) credential, extracted from a system missing specific security patches, is reused in a replay attack against a different system. Even if the target system is fully patched, successful exploitation could result in complete system compromise, affecting confidentiality, integrity, and availability.
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